Water-pump



R. L. PURNELL.

WATER PUMP.

APPLICATION FILI-:D IuNE Is, 1920.

, 1,389,458' Patented Aug. 30, 1921.

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Rulbplbrnel l INvENroR ATTORNEY WITNESS R. L. PURNELL.

WATER PUMP. APPLICATION man JUNE 1.a, 11920.

1,889,458. Patented Aug. 30, 1921.

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WATER PUMP.

` APPLICATION FILED 1UNEI-8. 1920. 1,389,458. Patented Aug.` 30, 1921.

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r l J l 4o sa II [17 5 A I I by E. L. Pawn/el .Y mym WITNESS s ATTORNEY UNITED STATES vPATENT OFFICE.

WATER-PUMP.

' Appncation inea June 1s,

To @Il 'tc/om it may concern Be it known that I, Ronn'r L. PURNELL, a citizen of the United States, residing at lied Level, in the county of Covington and State of Alabama, have invented new and useful improvements in 1V ater-Pumps, of which the following is a specification.

This invention relates to pumps, particularly to pumps for pumping water, and has for its object the provision of a pumping mechanism so constructed as to utilize the maximum degree of power possible for forcing water from a reservoir through suitable pipes into a storage tank or into a distributing system. Y l

An important object is the provision of pumping cylinders of novel formation, each cylinder embodying a relatively stationaryv portion and a pair of oppositely movable pistons, the action of the pistons toward and from each other within the relatively stationary portion resulting in compression whereby to expel the water therefrom in a very efficient manner.

Another object is the provision 4of pumping mechanism of this character including a train of links and levers operatively connected with the movable pistons in the cylinders, this train being' driven from any suitable source of power, which may be an engine, wind-mill, water-wheel, or the like.

With the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings in which` Figure 1 is an elevation of the device,

Fig. 2 is an elevation thereof taken at right angles to Fig. 1,

Fig. 3 is a plan view,

Fig. 4L is a sectional view taken longitudinally ofthe mechanism and through one of the cylinders,

Fig. 5 is an end elevation of one of the cylinders, and

Fig. 6 is a detail section through the base.

eferring more particularly to the drawings, the letter A designates a water reservoir and B designates a storage tank into which it is desired to pump water. In carrying out my invention I provide a suitable foundation 10 above which I mount a plurality of cylindersv or chests 11 which are identical in construction and which are trapezoidal in plan. Each of these 'chests Specification of Letters Patent.

Patented Aug. 30, 1921. i920. serial Ne. 389,921.

or cylinders includes a stationary member formed as a hollow metal shell and the smaller ends 12 of these members have connected therewith the pipes 13 leading into an outlet pipe 14 discharging into the tank Each pipe 13 is provided with a check valve 15 to prevent retrograde flow of water. Entering the larger ends of the chests 11 are pipes 16 provided with check valves 17 and communicating with a feed pipe 13 leading' from the reservoir A.

Each member 11 is provided internally with a longitudinal bore 19 leading from the inlet to the exhaust pipe and with a transverse bore 2O intersecting the bore 19. Disposed within the opposite ends of the bore O are pistons 21 which are slidable through s tuliing boxes 22 which are, of course, adj ustable to prevent leakage. Secured upon and extending in spaced relation to the members 11, are guides 23 which are slidably engaged by the pistons.

In order that the pistons may be driven, I provide a pair of suitably mounted shafts 24 which arev provided with oppositely disposed crank portions 25 having connected therewith links 26 connectedwith` bar 27 which are pivoted at 28, upon the smaller ends of the members 11 and which are pivotally connected, intermediate their ends, with the outer ends of the pistons, as shown at 29. These shafts 24 carry intermeshing -gears 30 whereby they may be rotated simultaneously in opposite directions.

Disposed upon one shaft 24 are ratchet wheels 31 and associated with each ratchet wheel is a lever 32 pivoted upon the associated shaft 24 and carrying a springpressed pawl 33 engaging the associated ratchet.k The other ends of these levers 32 are connected with links 34 which are in turn connected with other links 35 slidably mounted through bearings 36 carried by a supporting bar 37. Two of the links 35 are connected with crank portions 38 formed in a shaft 39 rotatably mounted in suitable bearings and this shaft 39 carries a gear 40 with which the third link 35 is eccentrically connected, as shown at 41. This gear 40 is adapted for connection with any suitable power device whereby to supply the motive force for operating the pumping mechanism above describe In the operation of the device it will be seen that when the shaft 39 is rotated, the links 35 will be moved and the levers 32 will be angular-ly reciprocated upon onel shaft 24 and this movement of the levers -12 will cause the pawls 33 to engage the ratchet wheels 31 and result in step by step move ment thereof. As these pawls are arranged 120 degrees apart, it will be apparent that continuous rotation of both of the shafts 2li will result.

2G andbars 27 will cause reciprocation of the piston members toward or from each other and as these piston members move outwardly or apart. water will be sucked into the chests 11 through the pipe 17, and when the pistons move inwardly, will be subsequently discharged through the pipes 13 into the pipe 14 and thence into the storage tank or distributing system. Owing to the construction of the chests or cylinders and the pistons opera-ting therein, it will be apparent that there will be more than the usual compressing action as the water will be efficiently forced into the discharge ends of the chests.

'Vhile I have shown and described the preferred embodiment of my invention, it is of course to be understood that l reserve the right to make such changes in the form, construction7 and arrangement of parts as will not depart from the spirit of the invention cr the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a pumping mechanism including a plurality of cylinders andl pistons operating therein, operating means comprising a As the shafts 24C rotate the links lever for each piston pivoted at one end and A ivotally connected with the piston intermediate its ends, a pair of superimposed shafts having a plurality of corresponding crank portions connected with the other end of the respective levers, gear connections between said shafts whereby to effect simultaneous rotation thereof in opposite directions, and means for imparting step by step rotation to one of the shafts.

2. ln a pumping mechanism including a plurality of cylinders and pistons operating therein, operatingmeans comprising a lever for each piston pivoted at one end and pivotally connected with the piston intermediate its ends, a pair of superimposed shafts having a plurality of corresponding crank portions connected with the other ends of the respective levers, gear connections between said shafts whereby to effect simultaneous rotation thereof in opposite directions, and means for imparting step by step rotation to one of said shafts, said last named means comprising a plurality of ratchet-s on one ofsaid shafts, a longitudinally movable link for each ratchet, a spring pressed pawl carried by each link engaging the associated ratchet, a plurality oflevers pivoted intermediate their ends and connected at one end with one of said links, and a drive shaft having a plurality of crank portions connected with the other end of said last named lever.

In testimony Vwhereof I affix my si ature.

ROBERT L. PR ELL. 

